Building steel structure engineering is a structure mainly made of steel. It is mainly composed of steel beams, steel columns, steel trusses and other components made of section steel and steel plates. The components or components are usually connected by welds, bolts or rivets. It is the most widely used building structure type this year. Because of its light weight and convenient installation, it is widely used in large warehouses, sports stadium, station hall, industrial workshops and other fields. Building steel structure projects generally require four coats of paint.
Common varieties: acrylic pre-coating primer, epoxy pre-coating primer, etc.
The adhesion with the substrate must meet the requirements. Different substrates should use appropriate anti-rust primers. Epoxy primers have better anti-corrosion effect and strong applicability to different substrates. It is widely used and can meet most of the anti-corrosion and anti-rust requirements.
The intermediate paint is generally semi-gloss paint, with a gloss of about 60, which is beneficial to discover the defects of the paint film after the primer is sprayed, so as to repair before the topcoat is sprayed.
Common varieties: acrylic enamel, acrylic polyurethane finish paint, fluorocarbon finish paint, etc. with good weather resistance, and sometimes glossy varnish is selected according to decorative requirements.